Schmetz Microtex (sharp) needles for machine.
The size is 130/705 H-M 80/12. The package says on the back "use with micro fibers, polyester, silk, foils, artificial leather, coated materials. Very thin acute point creates beautiful topstitching and perfectly straight stictches for quilt piecing. " I bought 5 packs of these on sale at Walmart for 2.25 a pack. Do you know why I would not use for Cotton quilting an other cotton projects. I will try one and see how it does on the table topper i am working on. Thanks for any information you can provide. Cannot pass up a bargin!!!